After-loading transfer bed for gynecological tumor radiotherapy

Abstract

A lifting device is arranged between a bed board and a bottom frame, the lifting device comprises a bearing plate, a supporting mechanism and a safety lock, the supporting mechanism comprises vertical frames, air springs and connecting rod assemblies which are symmetrically arranged, the two connecting rod assemblies are connected through carrier rollers, the carrier rollers make contact with the bottom face of the bearing plate, and the safety lock is arranged on the supporting plate. One end of each air spring is rotationally connected to the corresponding vertical frame, the other end of each air spring acts on the corresponding connecting rod assembly, the two vertical frames are fixed to the bottom frame, one end of the bearing plate is connected with the synchronous plate, the two sides of the synchronous plate are connected with the wing plates respectively, and the roller sets arranged on the synchronous plate and the wing plates can slide along the vertical frames; the safety locks are symmetrically arranged on the two sides of the bearing plate, each safety lock comprises a ratchet strip and a bidirectional pawl mechanism, the ratchet strips are fixed to the corresponding vertical frames, the bidirectional pawl mechanisms are rotationally arranged on the corresponding wing plates, brake cables used for controlling bidirectional pawls are connected to the brake handles, and the brake handles are connected to the control plate. The transfer bed is stable and comfortable in transfer and safe and reliable in locking.

Description

Technical field: [0001] The invention relates to the field of medical devices, in particular to an afterloading transfer bed used for brachytherapy of gynecological tumors such as cervical cancer. Background technique: [0002] Cervical cancer is one of the common gynecological malignancies. For locally advanced cervical cancer, radiotherapy is an important treatment method. With the development of intensity-modulated radiotherapy technology and image-guided three-dimensional post-cavity brachytherapy technology, the efficacy of radiotherapy for advanced cervical cancer has been greatly improved. Among them, tumor localization, simulation and verification are important links to ensure the accuracy of tumor location and dose during radiotherapy, and are also important measures to improve the efficacy of radiotherapy. [0003] At present, most domestic hospitals do not have analog positioning equipment in the after-loading treatment room. The placement, positioning and after-...

AI Technical Summary

Problems solved by technology

The rear-mounted transfer bed is powered by battery or lithium battery DC, and single motor drives double columns or double motors drives double columns. Single motor drive will generate asymmetrical driving force and cause the movement of double columns to be out of sync. The drive has the problem of whether the two motor shafts are synchronous. If the position synchronization error between the two shafts is too large, the height of the two columns will also be inconsistent during the lifting process, forcing the equipment to stop; a control panel is also required to display the power percentage, real-time current and voltage, etc. , the cost of the whole machine is high and the maintenance is more complicated; the adapter of this type of post-installation transfer bed is separated from the equipment body when it is idle, and it is inconvenient to store and manage

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